Cleanup test-alloc unit test case.

src/spaces.h

Index: src/spaces.h
diff --git a/src/spaces.h b/src/spaces.h
index 90f62f3938bbeaf844873a6368892a892c540809..de9f0b596668b6271ac982e1bb72c6e57f5a9f96 100644
--- a/src/spaces.h
+++ b/src/spaces.h
@@ -1520,6 +1520,10 @@ class PagedSpace : public Space {
     return size_in_bytes - wasted;
   }
 
+  void ResetFreeList() {
+    free_list_.Reset();
+  }
+
   // Set space allocation info.
   void SetTop(Address top, Address limit) {
     ASSERT(top == limit ||
@@ -2371,11 +2375,6 @@ class FixedSpace : public PagedSpace {
   // Prepares for a mark-compact GC.
   virtual void PrepareForMarkCompact();
 
- protected:
-  void ResetFreeList() {
-    free_list_.Reset();
-  }
-
  private:
   // The size of objects in this space.
   int object_size_in_bytes_;